US2807709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture for ceiling illumination
Assignee: EDWIN F GUTH CO
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Filing: 1955-07-01
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Granted: 1957-09-24
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Expires: 1975-07-01
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Guth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:59
CPC Classifications
F; F21; F21V; F21V17/00; F21V19/00; F21V19/02; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |